【摘要】：土石壩滲流特性分析對防止發(fā)生滲透破壞、減少滲漏損失具有重要意。隨著世界各國對水資源合理運(yùn)用的逐步重視,各類大型水利樞紐工程陸續(xù)興建。土石壩具有結(jié)構(gòu)簡單、施工管理方便、對自然環(huán)境適應(yīng)性強(qiáng)等突出特點(diǎn),為世界壩工建設(shè)的優(yōu)選壩型。由于土石壩存在滲流現(xiàn)象,而滲流問題輕則減少水庫流量,重則可能導(dǎo)致潰壩及水庫失事,影響大壩安全。因此,滲流特性分析在土石壩分析研究中是不可或缺的重要方面。 本文基于前人的研究成果,針對土石壩的滲流特性基本原理進(jìn)行了詳盡地探討,同時(shí)針對土石壩滲流數(shù)值模擬過程進(jìn)行了細(xì)致的分析研究。論文的主要內(nèi)容概況如下： (1)收集整理了有關(guān)滲流方面的基礎(chǔ)理論知識,闡述了滲流有限元分析的基本計(jì)算原理及具體實(shí)施方法,概括了數(shù)值模擬在土石壩滲流分析中的發(fā)展應(yīng)用過程及重要作用。 (2)針對土石壩非飽和滲流分析中兩個(gè)重要的滲流參數(shù),即土-水特征曲線和非飽和滲透系數(shù)曲線進(jìn)行專項(xiàng)研究,利用SPAW軟件結(jié)合土體自身特性獲取滲流參數(shù),運(yùn)用1stopt數(shù)據(jù)分析處理軟件結(jié)合已成熟的滲流參數(shù)數(shù)學(xué)模型進(jìn)行了數(shù)據(jù)擬合和修正。 (3)基于對比滲流場與溫度場基礎(chǔ)原理的相似性,得出了可以利用ANSYS軟件中的熱分析模塊進(jìn)行土石壩滲流分析研究的結(jié)論,并對具體研究中涉及到的理論進(jìn)行了簡要介紹。 (4)結(jié)合具體工程實(shí)例,利用ANSYS軟件參數(shù)化設(shè)計(jì)語言(APDL)和其特有的“生死單元”技術(shù),對土石壩穩(wěn)定滲流過程進(jìn)行了詳細(xì)的數(shù)值模擬分析。 (5)簡述了土石壩邊坡穩(wěn)定分析的基本理論,介紹了幾種常用的基于極限平衡理論的邊坡穩(wěn)定分析方法,概述了邊坡穩(wěn)定分析的有限元法。 (6)結(jié)合實(shí)際工程,應(yīng)用巖土工程技術(shù)分析軟件GeoStudio中的地下水滲流分析模塊(SEEP/W),對土石壩穩(wěn)定-非穩(wěn)定、飽和-非飽和滲流進(jìn)行了細(xì)致的數(shù)值模擬分析；利用GeoStudio中的邊坡穩(wěn)定性分析模塊(SLOPE/W)對滲流作用下的土石壩邊坡進(jìn)行了穩(wěn)定性分析。 滲流特性分析在土石壩相關(guān)研究中占據(jù)重要地位,本文選取的分析研究方法、建立的滲流模型和涉及數(shù)值模擬結(jié)果是合理可靠的,可為土石壩建設(shè)提供參考。
[Abstract]:The analysis of seepage characteristics of earth-rock dam is important to prevent seepage damage and reduce leakage loss. With the attention of countries in the world to the rational use of water resources, all kinds of large-scale water-control projects are being built one after another. Earth-rock dam has the advantages of simple structure, convenient construction management and strong adaptability to natural environment. It is the best dam type for dam construction in the world. Because of seepage phenomenon in earth-rock dam, the seepage problem reduces the reservoir flow, and the heavy flow may lead to dam break and reservoir failure, which will affect the safety of the dam. Therefore, seepage analysis is an indispensable and important aspect in earth-rock dam analysis. Based on the previous research results, the basic principles of seepage characteristics of earth-rock dams are discussed in detail. At the same time, the numerical simulation process of seepage flow of earth-rock dams is analyzed in detail. The main contents of the paper are as follows: (1) the basic theoretical knowledge about seepage is collected and arranged, and the basic calculation principle and concrete implementation method of seepage finite element analysis are expounded. The development and application of numerical simulation in seepage analysis of earth-rock dams are summarized. (2) two important seepage parameters in unsaturated seepage analysis of earth-rock dams are discussed. That is, the soil-water characteristic curve and unsaturated permeability coefficient curve are studied, and the seepage parameters are obtained by SPAW software combined with the characteristics of soil. The 1stopt data analysis and processing software is used to fit and modify the data in combination with the mature mathematical model of seepage parameters. (3) based on the similarity between the basic principles of seepage field and temperature field, The conclusion that the seepage analysis of earth-rock dam can be carried out by using the thermal analysis module of ANSYS software is concluded, and the theory involved in the concrete research is briefly introduced. (4) combined with the concrete engineering example, By using ANSYS parametric design language (APDL) and its unique "life and death unit" technology, the numerical simulation of the steady seepage process of earth-rock dam is carried out in detail. (5) the basic theory of slope stability analysis of earth-rock dam is briefly described. This paper introduces several commonly used slope stability analysis methods based on limit equilibrium theory, and summarizes the finite element method for slope stability analysis. (6) combined with practical engineering, The groundwater seepage analysis module (SEEP/W) of geotechnical analysis software GeoStudio is used to simulate the steady unsteady saturated-unsaturated seepage of earth-rock dams in detail. Slope stability analysis module (SLOPE/W) of GeoStudio is used to analyze the slope stability of earth-rock dam under seepage. Seepage characteristic analysis plays an important role in the research of earth-rock dam. The analysis method, seepage model and numerical simulation results are reasonable and reliable, which can provide reference for earth-rock dam construction.
【學(xué)位授予單位】：大連理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TV641

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 劉曉敏,趙慧麗,王連俊;非飽和粉質(zhì)粘土的土水特性試驗(yàn)研究[J];地下空間;2001年S1期

2 關(guān)明芳,陳洪凱;滲流自由面求解方法綜述[J];重慶交通學(xué)院學(xué)報(bào);2005年05期

3 陳洪凱,唐紅梅,張錄坤;滲流自由面求解的基本方法、修正及應(yīng)用[J];重慶交通學(xué)院學(xué)報(bào);1997年03期

4 劉智敏,林文介;大壩變形監(jiān)測自動(dòng)化技術(shù)的最新發(fā)展[J];桂林工學(xué)院學(xué)報(bào);2000年01期

5 羅啟北;萬海濤;張艷霞;;ANSYS在邊坡穩(wěn)定分析中的應(yīng)用[J];貴州工業(yè)大學(xué)學(xué)報(bào)(自然科學(xué)版);2006年06期

6 彭華,陳勝宏;飽和—非飽和巖土非穩(wěn)定滲流有限元分析研究[J];水動(dòng)力學(xué)研究與進(jìn)展(A輯);2002年02期

7 ;ADAPTIVE FEM ANALYSIS FOR TWO-DIMENSIONAL UNCONFINED SEEPAGE PROBLEMS[J];Journal of Hydrodynamics(Ser.B);1996年01期

8 吳良驥;G·L·Bloomaburg;;飽和—非飽和區(qū)中滲流問題的數(shù)值模型[J];水利水運(yùn)科學(xué)研究;1985年02期

9 吳夢喜,高蓮士;飽和 非飽和土體非穩(wěn)定滲流數(shù)值分析[J];水利學(xué)報(bào);1999年12期

10 朱學(xué)愚，謝春紅，，錢孝星;非飽和流動(dòng)問題的SUPG有限元數(shù)值解法[J];水利學(xué)報(bào);1994年06期

本文編號：2197927